The J/24 is a racing keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, a raked stem, a plumb transom, a transom-hung rudder controlled by a tiller and a fixed fin keel. It displaces 3,100 lb (1,406 kg) and carries 950 lb (431 kg) of lead ballast. [3][4]

Hull Speed: The maximum speed of a displacement hull (referring to a hull that travels through the water rather than on top of it, e.g. planing). HS = 1.34 x √LWL (in feet)

J/24 Technical specifications & dimensions- including layouts, sailplan and hull profile.

2000年6月14日 · The hull and deck of the J/24 are cored with balsa, which makes them stiff, light, quiet and relatively condensation-free. We have heard of occasional delaminations resulting from trailering with improperly adjusted poppets.

The J24 is a 24.0ft fractional sloop designed by Johnstone and built in fiberglass by Sydney Yachts/Bashford Int. since 1977. 5400 units have been built. The J24 is a light sailboat which is a good performer. It is stable / stiff and has a low righting capability if capsized. It …

2000年8月25日 · The fractional rig combined with the powerful hull minimizes sail inventory, and the strict one-design organization limits sophisticated deck gear. The sweptback spreaders eliminate the need for runner. The plain, flush deck leaves lots of room for a racing crew of four or five. The J/24 is a lot more fun to sail than the typical Quarter Tonner.

2020年3月13日 · This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed". The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.

The J/24 is almost indestructible. Its hull is made of a sandwich of 3/8" end grain balsa wood covered on both sides with two or three layers of fiberglass cloth, resin and gelcoat. The deck is a similar lamination, using 1/2" end grain balsa core. When repairs involve rebuilding or replacing gelcoat surface, refer to the

For dinghy sailors of all ages, the J/24 is the most satisfying way to bridge the gap between the responsiveness of small-boat sailing and the rewards of big-boat racing. Strictly enforced one-design rules mean that the best sailor - not the sailor with the biggest budget - wins.

J/24 is a 7.3 m monohull sailboat designed by Rod Johnstone and built by J Boats, Sydney Yachts/Bashford Int., Ovington Boats Ltd., and Waterline Systems, LLC starting in 1977. The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement.